DisclosureLens
HackingOtherSupply Chain (3P Vendor)Customer Data InvolvedIdentity (basic)Government IDHighContained

THE NEW-YORK HISTORICAL SOCIETY

bd_e76af978be176d71 · schema v1 · pii pii-v1

Severity

High

Discovered

Oct 27, 2020

Filed

Nov 25, 2020

To disclose

29 days

Affected · nationwide

2,7483 in this filing

Linked

4 filings

Confidence

50%
Full breach record for THE NEW-YORK HISTORICAL SOCIETY →3 incidents on file

The New-York Historical Society reported a data breach affecting its donors and patrons, stemming from an incident at its third-party service provider, Blackbaud. The breach was discovered on October 27, 2020, and occurred on May 20, 2020. The compromised information includes names and Social Security numbers. The organization offered 24 months of identity protection and credit monitoring services through Cyberscout to the 3 affected Maine residents.

Maine clockDiscovered Oct 27, 2020 → Filed with AG Nov 25, 202029d ✓ ME AG ≤30d29 days discovery → filing
⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 160 days
discovery → filing · 29 days

May 20, 2020

Begins

Oct 27, 2020

Discovered

Nov 25, 2020

Filed

vs. sector median

4 wks faster

This filing is one of 4 about the same incident.View merged incident
Part of BLACKBAUD, INC. supply-chain incident (2020) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Filing propagation · 4 filings · 2 states

View merged incident ↗
New Hampshire State AGOct 13 · first
Maine State AG+43d · this page
New Hampshire State AG+48d
Maine State AG+70d

Pattern: first filing Oct 13 (NH), last Dec 22 (ME) — a 70-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.